Skip to main content

Reply to this post | See parent post | Go Back
View Post [edit]

Poster: Matt Vernon Date: Mar 25, 2005 5:34am
Forum: etree Subject: Re: Uploading Flac vs Shn

We recently converted all the Phil Lesh shns -> flac before making them live on the Internet Archive. We used shntool to do the comparisons to confirm the conversions were correct. shntool has a nifty option where it can compute the md5 checksum for the "wav" files for each format free of any header/footer blocks. This way we could show that the 16 bit audio information was the same for the flac files we created from the shn files. I thought the shntool authors did a very insightful thing here. I also think there is great utility in generating a single md5 signature file for the flac files and using this to confirm that you have all the files for a given seed after downloading.

Reply to this post
Reply [edit]

Poster: Brad Leblanc Date: Mar 25, 2005 5:40am
Forum: etree Subject: Re: Uploading Flac vs Shn

We recently converted all the Phil Lesh shns -> flac before making them live on the Internet Archive.

There's been theoretical talk in the past of doing this to the whole collection here. The main push for it was that SHN, being a proprietary format, is just not suitable for being the "archival" format in comparison with an open source alternative.

However, due to the amount of work on the plates of the engineers, this has been shelved for about 3 years... :)

-Brad

Reply to this post
Reply [edit]

Poster: Matt Vernon Date: Mar 25, 2005 5:58am
Forum: etree Subject: Re: Uploading Flac vs Shn

The main block at this point is to get the flac-md5 sigantures automatically added to the correct shnid on the etree database.

for phil we did this manually

the perl script we use for the shn > flac runs on whole drives so it shouldn't be that hard to convert existing shn content on the servers.

Reply to this post
Reply [edit]

Poster: Brad Leblanc Date: Mar 25, 2005 6:02am
Forum: etree Subject: Re: Uploading Flac vs Shn

the perl script we use for the shn > flac runs on whole drives so it shouldn't be that hard to convert existing shn content on the servers.

Rockin... can you send me this Matt?

Reply to this post
Reply [edit]

Poster: Matt Vernon Date: Mar 25, 2005 10:06am
Forum: etree Subject: Re: Uploading Flac vs Shn

parker has it, i.e. the debugged version